River Heralds' Boon 
Instant
Put a +1/+1 counter on target creature and a +1/+1 counter on up to one target Merfolk.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Instant
Put a +1/+1 counter on target creature and a +1/+1 counter on up to one target Merfolk.